Question

Maria are 30 de garoafe albe si rosi .Cele rosi sunt de 5 ori mai multe decat cele albe.Care garoafe are de fischer fel?

Answer 1

a=garoafe albe
b=garoafe rosii
5*a=b
a+b=30
a+ 5*a=30
6*a=30
a=5
b=5*5
b=25

Answer 2

Garoafe albe = a
Garoafe rosii = r
A + r = 30 --> r = 30-a
A•5 = r
--> 30-a = a•5 /+a
30 = 6•a /÷6
5 = a
R = a•5 = 5•5 = 25
Maria are 5 garoafe albe (a) si 25 garoafe rosii (r).